Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/46—Fastening of windings on the stator or rotor structure
  • H02K3/48—Fastening of windings on the stator or rotor structure in slots
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03D—WIND MOTORS
  • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
  • F03D9/20—Wind motors characterised by the driven apparatus
  • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K1/00—Details of the magnetic circuit
  • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
  • H02K1/12—Stationary parts of the magnetic circuit
  • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
  • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/12—Machines characterised by the modularity of some components
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
  • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
  • H02K7/1807—Rotary generators
  • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
  • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
  • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K9/00—Arrangements for cooling or ventilating
  • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
  • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/70—Wind energy
  • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

• the invention relates to a stator, a stator and a generator, in particular a wind turbine.
• stator of a multi-phase multi-pole electrical machine wherein the stator is subdivided into several segments and there is a multi-phase winding on each segment.
• Moto Ren or generators in the higher power range over 1MW be the possibility of the iron package of the stator petitiontei len so that at the groove-parallel boundary sides half grooves are present. Only through the assembly of the individual segments, a continuous groove and thus a winding is generated. This is set, for example, in large tooth coil windings.
• the problem here is the fixation of réellelie ing coil legs in the half grooves in particular currency end of the manufacturing process and assembly process to fix the coil legs at its posi tion during and after the impregnation.
• the object of the invention is to provide a toothed coils vorzu correspondingly designed stator segments, which are positionally accurate during the manufacturing process and Monta gereaes fixed.
• stator segment of a stator of a dynamoelectric machine with axially grooved sheets arranged axially one behind the other, so that substantially axially extending grooves are formed
• stator stator segments according to the invention wherein the mutually facing open grooves are fastened to each other via fastening means to the yoke back of the stator segments.
• a dy namoelectric machine in particular a generator of a wind turbine
• a stator according to the invention wherein a cooling system, in particular a fan is provided by the air in the existing gap between the partial laminated cores is conveyed.
• the fixation of the outer Spu lenschenkels at the end of the stator segment by non-magnetic tables fastening means By these non-magnetic fastening means, heating by eddy currents during operation of the dynamoelectric machine, e.g. of the wind power generator avoided. Furthermore, by the Fixie tion of the outer coil legs, in particular during the manufacturing process, here especially the impregnation process, but also during the assembly process ge Stammrleis tet that the coil legs are not removed from the, an open groove forming tooth and thus the assembly or further manufacturing steps impaired.
• these non-magnetic fastening means, insbesonde re cable tie ensure a permanently strong fixation of the coil legs on the outer teeth, which is in particular for longer storage periods of such segments beneficial.
• the packets spaced apart the parting sheet, radial cooling channels within the laminated core of the stator and thus the stator bil the, as well as holding device for the non-magnetic loading fastening means for fixing the coil legs on the side wall groove serve.
• the spacers are in their radial extent at most as high as the yoke back and the radial tooth height together. Normally, the spacers will protrude into the region of the yoke back and not take the maximum tooth height.
• FIG. 3 shows a partial section of a stator segment with toothed coil
• FIG. 6 shows a partial section of a stator segment with toothed coil
• FIG. 7 shows in principle illustrated wind turbine.
• 1 shows a stator segment 1 of a dynamo-electric machine 11, in particular a generator with an outer rotor, which shows that the slots 2 of this stator segment 1 are stalk-shaped radially outward and the stator segment 1 is convex.
• the stator segment 1 is constructed in this case in the axial direction of individual partial laminated cores 9, which are spaced apart by spacers 5 from each other.
• Each partial sheet packet 9 has a predetermined number of sheets 8.
• the se packetization of the stator 1 facilitates the use of the stator segment 1 and the case of a composite stator 15 in a wind turbine 12 of a generator, a radial cooling of the stator 15th
• grooves 2 of the stator 1 form coils, in particular tooth coils 4 are used, each comprising a tooth 3 or several re teeth.
• FIG. 2 shows a detailed view of a peripheral region of a Sta gate segment 1 with its radially outwardly facing teeth 3, the grooves 2 and the indicated spacers 5 between tween the partial laminated cores 9.
• the spacers 5 are in this illustration in their width substantially less leads out as the Width of a tooth 3.
• This embodiment forms det, viewed in the radial direction, cooling channels of the stator segment 1 with a comparatively large cross-section. From the spacers 5 extends in the radial direction to the yoke back 14 or for mechanical reasons back into the yoke back 14 of the stator segment. 1
• the spacers 5 are in their radial extent maxi times as high as the yoke back 14 and the radial tooth height together. Normally, the spacers 5 project into the region of the yoke back 14 and also do not assume the maximum tooth height, as shown by way of example on a tooth 3 of FIG.
• a groove 2 which is referred to as an open groove 13, in which a coil leg 10 of a tooth coil 4 or egg ner other form of coil is positioned.
• a groove 2 is composed of groove side walls and a groove bottom. As an open groove 13, therefore, a groove is called, the tenwand only one Nutsei and having at least a portion of the groove bottom.
• the grooves 2, 13 are aligned substantially parallel to an axis 16 of a stator 15.
• the cable tie 6 can be threaded through this Ausneh rules. This reduces the Umschlingungsum catch, so that shorter cable ties 6 can be used.
• Such a non-magnetic cable tie 6 is hen vorgese at the Be prescribed stator segments 1 at one or more spacers Ab 5 for fixing the coil leg 10. Viewed on the axial length of a stator 1, for example, only at one or at each spacers Ab 5 or every other spacer 5 are the cable binder. 6
• FIG. 5 another illustration of this arrangement according to FIG. 4 shows how the positioning of the coil 4 takes place on the last tooth of the stator segment 1.
• the distance holder 5 between the partial laminated cores 9 is not yet provided with an amagnetic cable binder 6.
• the outer coil leg 10 would supply process in the further manufacturing or even move away during the assembly of the stator 1 to a stator 15 optionally from the tooth 3.
• FIG. 6 shows a cross-section of the above-mentioned representation of the arrangement of the coil 4 on the last, ie outer tooth 3, whereby the winding system of this stator segment 1 can be constructed such that a tooth coil 4 is provided around each tooth 3. This means that in each groove 2 under different coil sides of different coils 4 are present.
• stator segments 1 are preferred in the case of stators 15 which are provided for large powers and / or direct drives, in particular in wind turbines 12 according to FIG. 7 or tube mills.
• a rotor rotates about one axis 16, wherein the grooves 2 of the stator segment 1 and of the stator 15 are aligned substantially parallel to the axis.
• a fan can generate a cooling flow 17, which cools at least the generator and / or converter components, in particular the stator 15, via the radial cooling channels in the stator segment 1 which are generated by the spacers 5.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Energy (AREA)
• Sustainable Development (AREA)
• Combustion & Propulsion (AREA)
• Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Windings For Motors And Generators (AREA)
• Manufacture Of Motors, Generators (AREA)
• Polishing Bodies And Polishing Tools (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=61827548

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (3)

Citations (5)

Family Cites Families (9)

• 2018
  • 2018-03-27 EP EP18164127.5A patent/EP3547501A1/de not_active Withdrawn
• 2019
  • 2019-02-07 US US16/981,620 patent/US11349365B2/en active Active
  • 2019-02-07 EP EP19706894.3A patent/EP3724968B1/de active Active
  • 2019-02-07 CN CN201980022424.9A patent/CN111919357B/zh active Active
  • 2019-02-07 ES ES19706894T patent/ES2920325T3/es active Active
  • 2019-02-07 WO PCT/EP2019/052964 patent/WO2019185222A1/de unknown

Patent Citations (5)

Also Published As

Similar Documents

Legal Events